Lomcevak there are plenty of non-pilot Captains and at least some AEOs even.
Regarding the Mk 1 Bucc and the F2, the point being that they both needed significant upgrades to make them what they were in the end.
Agree your point about 'all marks' to be considered on the list, the list seems to comprise poorly designed airframes that were not redeemable and possibly reasonable airframes with inadequate power plants. As I tentatively suggested, the dead hand of the MoS may well have been a significant contributor.